Improvement in calendar-clocki



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Calendar Clock.

No. 41,122, Patented Jan. 5, 1864.

Witnesses: Inventam: (WW flak 1W.

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UNITED STATES PATENT OEErcE.

DON J. MOZART, OF NElV YORK, N. Y., LEVI BEAOH, OF FARMINGTON, AND LAPORTE HUBBELL, OF BRISTOL, CONNECTICUT.

IMPROVEMENTIN CALENDAR-CLOCKS.

Specification forming part of Letters Patent No. 4 1,122, dated January 5, 1864.

T0 aZZ whom it may concern: l struet the clock to run ayear at one winding,

Be it known that we, DON J. MOZART, of i all of which will be hereinafter described. the city, county, and State of New York, l To enable others skilled in the art to make LEVI BEACH, of Farmington, in the county 3 and use our invention, we will proceed to deof Hartford and State of Connecticut, and l scribedits construction and operation. LAPORTE HUBBELL, of Bristol, county of s The clock-movements are constructed with Hartford, State of (Jonnecticut,haveinvented i a view to diminish as much as possible the certain new and useful Improvements in Ualfriction on the pivot-bearings and other movendar-Uovements for Clocks, 610.; and we do ing parts which impinge upon each other, hereby declare that the following is a full, y and also with a view to obtain strength, with clear, and exact description thereof, reference a certainty in the operation of the parts, and being had to the accompany drawings, ina a good clock which will not require to be ing a part of this specification, in whichi wound'up but once a year. To these ends Figure l is a front or face View of our imwe employ for the frame to contain and supproved calendar-clock. Fig. 2 is an enlarged port the movements three pillar-plates, which front View showing the clock-movements, and f are made strong, light, and of such form that also the month and dayofthe-month dials, a f they may be cut from a sheet of metal to adportion of the former of which dials is broken I vantage in the saving of metal. away to show the escapement. Fig. 3 is aside I We use two mainsprings, A A, which may view in detail of the cloek-escapement. Fig.4 be applied to operate upon their respective is a side view of the calendanworks. Fig. 5 l arbors in any suitable manner. The arbors isa viewin detail of the seven-leafpinion dayaround which the mainsprings A A are of-the-week escapement, showing also a porwound have the great toothed wheels A A tion of the yearwheel and the leap-year applied to them by means of clicks and ratchtooth ofthis wheel. Fig. 6 is a view in detail ets, inthe usual manner, to enablethe springs ofthe verge of the balance-wheel of the clock to be wound up by turning the arbors with a and a portion of the scape-wheel enlarged. key, as in winding up any clock. These two Fig. 7, Sheet 2, is afront view of the calendar- 1 toothed wheels, A A engage with the central movements seen by removing the three dialpinion, a, which is indicated in red in Fig. 2, plates and one of the plates of the frame. Fig. l and thus an equality of force is communicated 8, Sheet 2, is an enlarged end view of the cal- I to each side of this pinion,which has the effect endar-works with the day-of-the-weck and l of balancing its staff and removing a large day-of-the-month dial-plates removed. Fig. i amount of friction which would necessarily 9 shows the month dial-plate escapement and occur if only one main wheel acted upon one a portion of this dail-plate. Fig. 10is an end side of the pinion. elevation of Fig. 9, showing the month-pinion The staff of the pinion a carries a large and escapement-staffof the month dial. Fig. toothed wheel, B, which transmits motion to 11 is a perspective view of the seven-leaf seapethe usual train of wheel-work. (Shown in Fig.

wheel, day-pinion, and staff. 5 2.)

Similar letters of reference indicate correi The scape-wheel (1 acts upon and 1S acted spending parts in the several figures. upon in its turn by the verge or staff I) of the Our invention relates to certain novel im- 1 balance-wheel b, if a pendulum is not used in provements in mechanism for registering the i stead of this wheel. This verge b is conmonths, days of the month, days of the week, strncted with a view to obtain simplicity and and leap'years in regular order, and also in a direct or positive application of a common clocks for operating said mechanism, whereby ratchet-wheel to it, and for this purpose it is we are enabled to simplify and to render prepared with a circular tool having a beveled very compact the calendar-movements, and to edge, and also an annular tongue on its edge. operate the same without giving any addi- This tool formsavertically-curved depression tional force to the mainsprings of the clock. and two beveled surfaces, terminating in the We are also enabled by our improvements to center of the staff in a circular cavity, as provide for registering leap-years, and to conclearly shown in the enlarged Fig '5, and fully tooth of the month dial-plate G and retains the next succeeding tooth until the monthpinion again makes a revolution.

The year-wheelD in its revolution thus'con tinually winds up the spring 7. and keeps the same always ready for giving to the dial-plate the twelfth of a revolution when it is released by the arms m n at each re 'olution of the month-pinion H.

It is necessary to introduce a tooth in the year-wheel D once in every four years and thus register leap-year, by adding one day to the month of February. This we do automatically by a supplemental tooth, which is formed on the outer edge of a narrow plate or rod, 1". This rod has a circular hoop, 1, formed on its opposite end, which receives an eccentric, W, as shown in Fig. 5, Sheet 1. The eccentric r is keyed to a four-pointed star or cam, J, through the axis of which passes a stud, which attaches this cam to the spoke of the year-wheel D. The cam J at every revolution thrusts out the tooth in the space hand causes this tooth to engage with the sevenleaf day-pinion g.

The plate 0", carrying the supplemental tooth, is slotted lengthwise, and kept in place by means of a pin, s,'whicl1 passes through this slot and into the yearwheel rim. This pin 8 directs the tooth properly, so that it will register the extra day as it passes the daypinion g. The fourpointed, cam J, which gives motion to the extra tooth, is acted upon by the perpendicular end of a stationary arm, L, which is fixed to one of the pillars of the frame plates 0 0, (shown in Fig. 7,) and which gives a quarter-revolution to the cam-wheel at each complete revolution of the year-wheel. Thus at every fourth revolution of the yearwheel D the extra tooth is moved out into position for registering twentynine days in the month of February, after which the tooth retreats, and is brought into operation again when another leap-year rolls round.

The dial-plate K, having the days of the week regularly indicated and spaced off on its face, issecured to the frame O 0 so that the end of the staff f of the day-of-the-week pinion g will pass through its center, and on the end of this shaft f a hand or pointer is placed spring-tight. This hand points to the days of the week, A circular slot, t, is made through this dial K, concentric with the axis of the cylinder f, and through this slot projects the end of the vibrating arm 0 By means of this projecting end of the arm 6 the hands on the dial-plates can be set off so as to indicate any desired day of the week, or day of the month,or month, and this can be done without removing the dial-plate K. Below this dial-plate K is a larger dial-plate, N, having the numbers corresponding to the days of a month regularly spaced oft on its face. This dial-plate is fixed to the plates (J 0, over the axis of the month-pinion H, and the staff of this pinion carries on its end a hand for pointin g to the numbers on this dial. An opening is made through the fixed dialplate N to expose one at a time the months as the month dial-plate revolves.

The calei'ider-movements, thus constructed and arranged, are secured to the back-board of the clock-frame, just below the clock-movements, and the only connection between the clock and calendar is a fine wire, which hits up the arm 6 of the prime escapement of the calendar, as above described. Thus there will be no strain on the clock-movements in consequence of the application thereto of the improved calendar.

The operation is as follows The number of teeth in the large trip-wheel b are so regulated that this wheel makes one revolution in twenty-four hours, and at every revolution the day-of-the-week pinion g is allowed to escape one tooth, which registers one day on the dial-plate K. \Vhen the day-pinion has thus escaped thirty times, if the month has only thirty days in it, a space in yearwheel D will pass the day-pinion, equal in width to one tooth. Simultaneously with this movement the arm m on the month-pinion staff will trip the cylinder at and allow the month (corresponding to the thirty days) which it is desired to bring opposite the spacein the dialplateN to come within this space. At the same time the month-wheel will move the distance of two teeth, and its hand will jump from number 30 to number 1, thus indicating the first day of the new month. Then at every subsequent movement of the day-pinion g the month pinion will indicate or point to the days of the month on dial-plate N. Both the day and month pinions and their respective hands move simultaneously. When the February-space it passes the day-pinion, the month having only twenty-eight days, the month-hand will jump from number 28, on dial N, to number 1, the first day of the next month.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

l. The application of a mainspring, E, to operate the year-wheel of the calender-movements inde 'iendently of the mainspring, of the clock, substantially as described.

2. The arm 0 in combination with the trippin g-wheel b when said arm extends through the face of the calendar, substantially as and for the purpose described.

3. The vibrating arm 0', cylinder f, or its equivalent, and ratchet scape-wheel f, for registering the revolutions of the wheel b substantially as described.

4. As an element of a calendar-clock, the year-wheel D, constructed, applied, and operating substantially as and for the purposes described.

5. The manner specified of combining the year-wheel D and seven-leaf pinion g, for the purpose set forth.

6. The supplemental or leap-year tooth, combined with year-wheel D, and operated by an eccentric, T2, cam-wheel J, and arm L, substantially as described.

7. The toothed month-dial G, applied to the arbor i of the year-Wheel D, and operated by said Wheel through the medium of a spring, -K, substantially as described.

8. In combination therewith, the cylinder escapement n, operating substantially as described.

9. The monthpinion H, in combination with the year-wheel D, constructed substantially as described.

10. The specified manner of applying the Witnesses:

B. U. Braces, S. 1. NEWELL. 

